using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.AI;



public class EnemyAIRanged : Bolt.EntityEventListener<IIonCanonSpider>
{


	[SerializeField]
	GameObject ionBulletSpawnPoint;

	[SerializeField]
	GameObject ionBulletPrefab;

	[SerializeField]
	float ionBulletSpeed = 200f;

	[SerializeField]
	GameObject sheelIjectionPrefab;

	float muzzleFlashTimer;
	float muzzleFlashTimerDuration = 1f;

	Transform _target;
	bool _setNewTarget = true;
	float _timeOutTimer;
	float _timeOutTimervalue = 3;
	NavMeshAgent _agent;
	bool _canTrackPlayer = false;

	[SerializeField]
	List<GameObject> _wayPoints;
	bool _canTravelToWayPoints = true;
	private float _wayPointWaitTimer;
	private float _wayPointWaitTimerValue;
	int _nextWayPoint = 0;

	private bool _canSetTracking = true;

	// Shoot references
	public float _shootRateTimerDuration = 1f;
	private float _shootTimer;

	[SerializeField]
	Animator _anim;

	[SerializeField]
	private float _viewAngle = 45;

	[SerializeField]
	private float _attackDistance = 2;

	[SerializeField]
	private float _rangedAttackDistance = 10;

	bool _canAttack;
	float distance;
	public float wayPointStoppingDistance = 2;

	Vector3 direction;

	[SerializeField]
	GameObject muzzleFlash;

	private bool hasStopped;

	public GameObject _shellIjectionPosition;


	IBMPlayerState playerState;

	public override void Attached()
	{


		if (!entity.hasControl && !entity.isOwner)
		{
			state.SetTransforms(state.transform, transform);
			state.SetAnimator(GetComponent<Animator>());
			state.Animator.SetLayerWeight(0, 1);
			state.Animator.SetLayerWeight(1, 1);
		}



		//_target.position = Vector3.zero;
		base.Attached();

		if (BoltNetwork.IsServer)
		{
			state.SetTransforms(state.transform, transform);
			state.SetAnimator(GetComponent<Animator>());
			state.Animator.SetLayerWeight(0, 1);
			state.Animator.SetLayerWeight(1, 1);

			//state.Target = _target.transform.position;


			_anim = GetComponent<Animator>();
			state.SetAnimator(GetComponent<Animator>());
			_agent = GetComponent<NavMeshAgent>();
			_agent.stoppingDistance = wayPointStoppingDistance;
			_canTravelToWayPoints = true;

			_wayPoints.AddRange(GameObject.FindGameObjectsWithTag("EnemyWayPoints"));
			var rand = Random.Range(0, _wayPoints.Count);
			_nextWayPoint = rand;
			_agent.SetDestination(_wayPoints[rand].transform.position);
			_agent.speed = 4;
			_agent.isStopped = false;
			if (_anim != null)
			{
				_anim.speed = 1;
				_anim.SetBool("Run", false);
				_anim.SetBool("Idle", false);
				_anim.SetBool("Walk", true);
				state.Idle = _anim.GetBool("Idle");
				state.Walk = _anim.GetBool("Walk");
				state.Run = _anim.GetBool("Run");
			}
		}
	}

	// Update is called once per frame

	void FixedUpdate()
	{

		if (BoltNetwork.IsServer)
		{
			RangedAttack();
		}

	}

	private void RangedAttack()
	{


		if (_target != null)
		{
			//state.Target = _target.position;
			DirectionIs();
			float angle = Vector3.Angle(direction, transform.forward);

			distance = Vector3.Distance(_target.position, this.transform.position);

			direction.y = 0;
			if (_target != null)
			{
				BoltEntity pEntity = _target.GetComponent<BoltEntity>();
				playerState = pEntity.GetState<IBMPlayerState>();
			}
			if (distance < 20 && angle < _viewAngle && !playerState.Dead)
			{
				_canTrackPlayer = true;
				_canTravelToWayPoints = false;
				_agent.stoppingDistance = _attackDistance;
				if (_anim != null)
				{
					_anim.SetBool("Run", false);
					_anim.SetBool("Idle", true);
					_anim.SetBool("Walk", false);
					state.Idle = _anim.GetBool("Idle");
					state.Walk = _anim.GetBool("Walk");
					state.Run = _anim.GetBool("Run");
				}
			}

			if (_canTrackPlayer)
			{
				if (playerState.Dead)
				{
					_agent.isStopped = false;
					_target = null;
					_timeOutTimer = 0;
					_setNewTarget = true;
					_canTrackPlayer = false;
					_agent.stoppingDistance = .5f;
					_agent.speed = 2f;
					_canTravelToWayPoints = true;
					_anim.speed = 1;
					state.AnimSpeed = _anim.speed;
					_agent.SetDestination(_wayPoints[_nextWayPoint].transform.position);

					if (_anim != null)
					{
						_anim.SetBool("Run", false);
						_anim.SetBool("Idle", false);
						_anim.SetBool("Walk", true);
						state.Idle = _anim.GetBool("Idle");
						state.Walk = _anim.GetBool("Walk");
						state.Run = _anim.GetBool("Run");
					}
					return;
				}


				transform.rotation = Quaternion.Slerp(this.transform.rotation, Quaternion.LookRotation(direction), 0.3f);

				if (distance <= _attackDistance && !playerState.Dead)
				{
					_shootTimer += Time.deltaTime;
					if (_shootTimer > _shootRateTimerDuration)
					{

						if (BoltNetwork.IsServer)
						{
							//Instantiate Bullet
							var entity = GetComponentInParent<BoltEntity>();
							var rotation = entity.GetComponent<Transform>().rotation;
							var newpos = new Vector3(muzzleFlash.transform.position.x, muzzleFlash.transform.position.y, muzzleFlash.transform.position.z + 1);
							// create shell
							var _ionBullet = BoltNetwork.Instantiate(ionBulletPrefab, ionBulletSpawnPoint.transform.position, rotation);

							_ionBullet.GetComponent<Rigidbody>().AddRelativeForce(new Vector3(0, 0, ionBulletSpeed), ForceMode.VelocityChange);

							GameObject go = BoltNetwork.Instantiate(sheelIjectionPrefab, _shellIjectionPosition.transform.position, rotation);
							go.GetComponent<Rigidbody>().AddRelativeForce(2f, 3f, -2f, ForceMode.Impulse);
							go.GetComponent<Rigidbody>().AddTorque(0, 120, 400, ForceMode.VelocityChange);

							CmdAttack();
						}
						_shootTimer = 0;
					}


					_agent.isStopped = true;
					_canAttack = true;
					_timeOutTimer = 0;
					_anim.speed = 1;
					state.AnimSpeed = _anim.speed;
					_agent.stoppingDistance = _attackDistance;

					if (_anim != null)
					{
						_anim.SetBool("Run", false);
						_anim.SetBool("Idle", true);
						_anim.SetBool("Walk", false);
						state.Idle = _anim.GetBool("Idle");
						state.Walk = _anim.GetBool("Walk");
						state.Run = _anim.GetBool("Run");
					}
				}

				if (distance < 15 && distance > _attackDistance)
				{

					_agent.isStopped = false;
					_canAttack = false;
					_agent.SetDestination(_target.position);
					_agent.speed = 8;
					_timeOutTimer = 0;
					_anim.speed = 2;
					state.AnimSpeed = _anim.speed;
					_agent.stoppingDistance = _attackDistance;
					if (_anim != null)
					{
						_anim.SetBool("Run", true);
						_anim.SetBool("Idle", false);
						_anim.SetBool("Walk", false);
						state.Idle = _anim.GetBool("Idle");
						state.Walk = _anim.GetBool("Walk");
						state.Run = _anim.GetBool("Run");
					}
				}
				else if (distance >= 15)// just changed
				{


					_timeOutTimer += Time.deltaTime;
					if (_timeOutTimer >= _timeOutTimervalue)
					{
						//_target.position = Vector3.zero;
						_agent.isStopped = false;
						_target = null;
						_timeOutTimer = 0;
						_setNewTarget = true;
						_canTrackPlayer = false;
						_agent.stoppingDistance = wayPointStoppingDistance;
						_canTravelToWayPoints = true;
						_anim.speed = 1;
						state.AnimSpeed = _anim.speed;
						_agent.SetDestination(_wayPoints[_nextWayPoint].transform.position);
						if (_anim != null)
						{
							_anim.SetBool("Run", false);
							_anim.SetBool("Idle", false);
							_anim.SetBool("Walk", true);
							state.Idle = _anim.GetBool("Idle");
							state.Walk = _anim.GetBool("Walk");
							state.Run = _anim.GetBool("Run");
						}

					}
				}

			}

			NavigateEnemy();
		}
	}



	private void MeleeWander()
	{

	}

	private void MuzzleFlash()
	{

	}


	private void NavigateEnemy()
	{

		if (_canTravelToWayPoints)
		{
			RotationDirection();

			var waypointNextDistance = Vector3.Distance(_target.position, _wayPoints[_nextWayPoint].transform.position);

			if (waypointNextDistance < wayPointStoppingDistance && !hasStopped)
			{
				Debug.Log("Starting navigation sequence!");
				hasStopped = true;
				StartCoroutine(NavigateLogic());

			}
			else if (hasStopped && waypointNextDistance > 2f)
			{
				hasStopped = false;
			}
		}

	}

	IEnumerator NavigateLogic()
	{
		hasStopped = true;
		_agent.isStopped = true;
		_agent.speed = 0;
		if (_anim != null)
		{
			_anim.SetBool("Run", false);
			_anim.SetBool("Idle", true);
			_anim.SetBool("Walk", false);
			state.Idle = _anim.GetBool("Idle");
			state.Walk = _anim.GetBool("Walk");
			state.Run = _anim.GetBool("Run");
		}
		Debug.Log("Navigating in Idle");
		yield return new WaitForSeconds(Random.Range(.5f, 2f));

		_nextWayPoint = Random.Range(0, _wayPoints.Count);
		_wayPointWaitTimerValue = Random.Range(.5f, 2f);
		//RandomNavmeshLocation(4f);
		_agent.SetDestination(_wayPoints[_nextWayPoint].transform.position);
		_wayPointWaitTimer = 0;
		_agent.isStopped = false;
		_agent.speed = 4;

		if (_anim != null)
		{
			_anim.SetBool("Run", false);
			_anim.SetBool("Idle", false);
			_anim.SetBool("Walk", true);
			state.Idle = _anim.GetBool("Idle");
			state.Walk = _anim.GetBool("Walk");
			state.Run = _anim.GetBool("Run");
		}
		Debug.Log("Going to Way Point");
	}

	private void DirectionIs()
	{

		direction = _target.position - this.transform.position;

	}
	private void RotateToAttacker()
	{

		Vector3 newDirection = _target.position - transform.position;
		newDirection.y = 0;

		if (newDirection != Vector3.zero)
		{
			transform.rotation = Quaternion.Slerp(transform.rotation, Quaternion.LookRotation(newDirection), 0.3f);
		}

	}

	private void RotationDirection()
	{

		Vector3 newDirection = _wayPoints[_nextWayPoint].transform.position - transform.position;
		newDirection.y = 0;

		if (newDirection != Vector3.zero)
		{
			if (transform.forward != Vector3.zero)
			{
				transform.rotation = Quaternion.Slerp(transform.rotation, Quaternion.LookRotation(transform.forward), Time.deltaTime * 0.3f
				);
			}
		}

	}

	//[Command] ------------------Update
	private void CmdAttack()
	{
		if (BoltNetwork.IsServer)
		{
			muzzleFlash.SetActive(true);
			Invoke("ResetFlash", .1f);
			Debug.Log("Fired and should of flashed");
		}
	}

	private void ResetFlash()
	{
		if (BoltNetwork.IsServer)
		{
			muzzleFlash.SetActive(false);
		}
	}

	public bool CanAttack()
	{
		return _canAttack;
	}

	private void OnTriggerEnter(Collider other)
	{


		if (other.gameObject.tag == "Player")
		{
			if (_setNewTarget)
			{
				_target = other.gameObject.transform;
				//state.Target = _target.transform.position;
				playerState = _target.GetComponent<IBMPlayerState>();
				_setNewTarget = false;
			}
		}

	}
	private void OnTriggerStay(Collider other)
	{

		// Debug.Log("ENTERED ONTRIGGER: " + other.gameObject.name.ToString());

		if (_target == null && other.gameObject.tag == "Player")
		{

			_target = other.gameObject.transform;
			//state.Target = _target.transform.position;
			playerState = _target.GetComponent<IBMPlayerState>();
			_setNewTarget = false;

		}

	}

	public void DestroyMe()
	{
		if (BoltNetwork.IsServer)
		{
			BoltNetwork.Destroy(entity.gameObject);
		}
	}

	//Wandom random point
	public Vector3 RandomNavmeshLocation(float radius)
	{
		Vector3 randomDirection = Random.insideUnitSphere * radius;
		randomDirection += transform.position;
		NavMeshHit hit;
		Vector3 finalPosition = Vector3.zero;
		if (NavMesh.SamplePosition(randomDirection, out hit, radius, 1))
		{
			finalPosition = hit.position;
		}
		return finalPosition;
	}
}